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Finding the Fourth Proportional to 401,671.62, 554,302.08 and 220,385.16

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Solution

The fourth proportional to 401,671.62, 554,302.08 and 220,385.16 is: 304,128.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,671.62 : 554,302.08 = 220,385.16 : x
  2. Step 2: Convert to fraction form
    401,671.62/554,302.08 = 220,385.16/x
  3. Step 3: Cross multiply
    401,671.62x = 554,302.08 × 220,385.16
  4. Step 4: Simplify right side
    401,671.62x = 122,159,952,589.13
  5. Step 5: Solve for x
    x = 122,159,952,589.13/401,671.62
  6. Step 6: Final answer
    x = 304,128.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.